Home / 5,281.78-7,292.28-3,394.21

Finding the Fourth Proportional to 5,281.78, 7,292.28 and 3,394.21

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Solution

The fourth proportional to 5,281.78, 7,292.28 and 3,394.21 is: 4,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.78 : 7,292.28 = 3,394.21 : x
  2. Step 2: Convert to fraction form
    5,281.78/7,292.28 = 3,394.21/x
  3. Step 3: Cross multiply
    5,281.78x = 7,292.28 × 3,394.21
  4. Step 4: Simplify right side
    5,281.78x = 24,751,529.70
  5. Step 5: Solve for x
    x = 24,751,529.70/5,281.78
  6. Step 6: Final answer
    x = 4,686.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.